ize u0026nbsp;number 16 u0026nbsp;u0026nbsp;u0026nbsp;diameter u0026nbsp;u0026nbsp;1.6cm

u0026nbsp; u0026nbsp; u0026nbsp; u0026nbsp; u0026nbsp;number 17 u0026nbsp;u0026nbsp;u0026nbsp;diameter u0026nbsp;u0026nbsp;1.7cm

u0026nbsp; u0026nbsp; u0026nbsp; u0026nbsp; u0026nbsp;number 18 u0026nbsp; u0026nbsp;diameter u0026nbsp;u0026nbsp;1.8cm